Exhaust-steam-actuating damper-regulator.



B. P. GILMAN.

EXHAUST STEAM ACTUATING DAMPER REGULATOR APPLICATION FILED APR. 24, 1915.

. wam m Patented July 10, 1917.

2 SHEETSSHEET I.

R F Q ziimmv P. GIL'IVIAN. EXHAUST STEAM ACTUATING DAMPER REGULATOR.

APPLIQATION HLEP APR. 24, 1915.

Patented July 10,

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BENOIST P. GILMAN, OF YOAKUM, TEXAS.

EXHAUST-STEAM-ACTUATING DAMPER-REGULATOR.

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Specification of Letters Patent.

Patented July 10, 1917.

Application filed April 24, 1915. Serial No. 23,666. i

especially with reference tothe provision of.

an exhaust actuated mechanism for operating the dampers of the air inlet box to automatically close the dampers when the locomotive 1s standing and to open the dampers when. the locomotive is running.

The invention consists in the construction,

combination and arrangement of devices hereinafter described and claimed.

In the accompanying drawings Figure 1 is a diagrammatic elevation of a portion of a locomotive having oil burning equipment and an exhaust actuated mechanism for automatically operating the dampers of the air inlet box in accordance with my invention.

Fig. :2 is a detail elevation of the same on a larger scale.

F is a horizontal sectional view on a plane intersecting the cylinder.

i or the purposes of this specification a locomotive boiler is indicated at a, one of the cylinders at b, the steam chest 0, the exhaust stand at (Z and the fire boX of oil burning equipment at 33. The fire box is preferably constructed as described in the specification forming part of my application. for Letters Patent of the United States for oil burning equipments for locomotives filed April 14-, 191 1. Serial. No. 831,824, allowed December 1 1, 1914.

At the front and rear sides of the air inlet box 57 are dampers 59 which are pivotally mounted as at 60 for vertical angular movement, to open and closed position, and each of these dampers is provided at one end with a curved arm 61. A rock shaft 62 extends transversely across the center of the air inlet box and has its bearings in the side walls thereof. At one end of the rock shaft are oppositely extending curved rock arms 6 1 which are connected to the arms 61 of the dampers by links 65. At the same end of said rock shaft is a crank arm 66. A vertically movable connecting nod 67 of the damper controlling mechanism, hereinafter described, has its lower end pivolally connccted to the said arm 66.

The dampers of the air inlet box are equipped with coiled springs 82 of low resistance which normally close said dan'ipers and hold them closed and yet so that they To automatically will yield to pressure. open the dampers when the locomotive is running I provide an exhaust steam prespure actuated mechanism described as folowe:

to the locomotive and is here shown as bolted to the under side of the running board. 84. This cylinder has heads 85-86 screwed re spectively to thefr-ont and rear ends thereof and in one side of the cylinder at its center.

a vent opening 87. A piston 88 is arranged for reciprocating movement in the cylinder and has a forwardly extending sleeve 89 which is provided in one side with a vent opening 90 which registers with the vent opening'87 when the piston is at the front limit of its stroke. The piston is provided with suitable packing rings 91 and also with a piston rod 92. The piston rod operates in an opening in the rear cylinder head 86 and is connected by a knuckle oint 93 to a rod 91 which is adapted to reciprocate in guide openings in a pair of hangers 95 which are secured to and depend from the running board. A. stop collar 90 to limit the stroke of the piston, is secured on the rod 9% by a set screw 97 and is suitably spaced. from the front hanger 95. A bell crank 98 is pivotally connected as at 99 to a hanger 100 which is also bolted to and depends from the running board. The rear end of the rod 9 1 is pivotally connected as at 101 to one arm of the bell crank and the upper end of the rod. 67 which operates the flash pan dampers is pivotally connected to the other arm of the bell crank as at 102. A steam feed pipe 108 is connected to the A cylinder 83 is secured at a suitable point front head of the cylinder 83 and is also is running slowly steam from the stand d is freed from the front side of the piston through said vent holes, and by backing up into the exhaust. The piston remains in this position until the engine acquires such speed that the consequent'increased rapidity of the exhaust causes pressure from the exhaust stand cl to be applied to the front side of the piston in the cylinder 83 through the pipe 103 and such pressure moves the piston rearwardly thereby causing it to correspond- .air for combustionin the fire box.

ing'ly'actuate the rod 94, partly turn the bell crank 98and cause said bell crank through the instrumentality ofthe rod 67 arm 66,

rock shaft 62, arm 64 and links 65 to open the dampers of theflash pan-against therewsistance of their springs and to hold said dampers open while the engine is running, thus furmsh ng an increased quantity of I V The openings in the hollow fire bricks forming part of the. lining of the fire-box furnish suflicient air for combustion until the flash pan dampers are open. In practice the dampers will be automatically opened by the action of the exhaust .steam from the engineswhen the locomotive has reached a speedof approximatelylO miles per hour.

I have herein shown and described my exhaust steam actuated damper regulator as for use onan oil burner locomotive where it will be evident'that the same may also be used in connection with stationary steam boilers and engines and for other like purposes and I 7 means to close the dampers when the engine is standing, means actuated by the exhaust and to open the dampers when the engine 7 1s running.

7 .An engine of the class described having afire box provided with an air inlet box,

dampers for said air inlet box and auto-- matically acting means to close the dampers when the engine is standing and means to open the dampers when the engine is running, said damper opening means including a fluid pressure operating mechanism connected to and actuated by the exhaust.

3. An engine of the class described having a fire box provided with an air inlet box, dampers for said air inlet box, automatically acting means to close the dampers when the engine is standing and means to open the dampers when the engine is running, said damper. opening means including a fluid pressure operating mechanism connected to and actuated by the exhaust, and also including counteracting springs to close the dampers when said fluid pressure actuating means is relieved of pressure.

4. In an engine, a fire box having an air inlet box provided with dampers and means to normally close the dampers, a cylinder having a feed pipe connecting one endthereof to the exhaust nozzle stand of the engine, said cylinder having a vent opening in one side, a piston in the cylinder having .a sleeve open in the feed end of the cylinder and also provided with an opening adapted to register with said vent opening when the piston is in one position, a piston rod, and operating connections between the piston rod and the dampers to open the latter when the piston is moved by the power of the pressure of exhaust steam in the nozzle stand.

In testimony whereof I afiix my signature in presence of two witnesses.

BENOIST P. GILMAN.

Witnesses:

E. H. WAHMANN, J. H. UF oTo.

Copies of this patent mayybe obtained forjve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

